Clutch spring



FIG. 1 is a perspective view of the clutch spring;

FIG. 2 is a front view of the clutch spring;

FIG. 3 is a back view of the clutch spring;

FIG. 4 is a side view of the clutch spring; and,

FIG. 5 is a cross-sectional view of the clutch spring.

Since the clutch spring is circular in shape with a concave center portion, all side or edge views are the same.

The cross-sectional view in FIG. 5 is taken along the major top-to-bottom diameter of the clutch spring as shown in FIG. 2. 

CLAIM The ornamental design for the clutch spring, as shown and described. 